North Dakota · National Park trail

Coal Vein Trail Post 6: Seasonal Pool

in North Dakota

Low spots like this one formed when the ground collapsed during the coal vein fire. They fill with water in the wet springtime and after summer rains. These seasonal ponds are important habitats for western chorus frogs which must lay their eggs in standing water.

Listen for the chirping of the male chorus frogs near seasonal pools from April to June.

States: North Dakota
Trail type: National Park trail
Centroid coords: 46.9236°, -103.3983°

About Theodore Roosevelt National Park

National Park

This trail is inside Theodore Roosevelt National Park, a national park managed by the U.S. National Park Service. Conditions, road status, trail closures, and reservation requirements are published on the park's NPS page — check it before driving in, especially in winter or during major weather events.

Entrance fee: $30 per vehicle (verify current rate on the park page). An America the Beautiful annual pass ($80) covers entrance to all NPS units.

Official NPS trail page: https://www.nps.gov/places/coal-vein-trail-post-6-seasonal-pool.htm

Park homepage: https://www.nps.gov/thro/index.htm

Plan your hike

Practical notes

Maps + permits: long-distance trails like this often require permits for through-hiking, backcountry camping, or specific sections (especially in National Parks). Check with the maintaining organisation listed above and the relevant land manager before booking travel.

Water + supplies: water sources vary seasonally on most U.S. trails. Carry a filter and consult current trail-condition reports — through-hiker journals (PCT-L, AT Reddit, etc.) and the maintaining organisation publish regular updates.

When to go: hiking seasons vary widely with elevation, latitude, and snowpack. Through-hikers traditionally start the AT in March-April (Springer northbound) and the PCT in late April (Campo northbound). High-elevation western trails (CDT, JMT, Wonderland) generally aren't passable until July.

If you've hiked Coal Vein Trail Post 6: Seasonal Pool and have current notes (water sources, trail closures, permit changes), tell us at /contact — we update pages as we learn.